English-Thai Dictionary
spicule
N ส่วน ที่ คล้าย เข็ม
Webster's 1913 Dictionary
SPICULE
Spic "ule, n. Etym: [L. spiculum a little point, a dart. ]
1. A minute, slender granule, or point.
2. (Bot. )
Defn: Same as Spicula.
3. (Zoöl.)
Defn: Any small calcareous or siliceous body found in the tissues of various invertebrate animals, especially in sponges and in most Alcyonaria.
Note: Spicules vary exceedingly in size and shape, and some of those found in siliceous sponges are very complex in structure and elegant in form. They are of great use in classification. Description of the Illustration: a Acerate; b Tricurvate, or Bowshaped; c d Hamate; e Broomshaped; f Scepterellate; g Spinispirulate; h Inequi-anchorate; i Sexradiate; j A Trichite Sheaf; k Six-rayed Capitate; l Rosette of Esperia; m Equi- anchorate.
New American Oxford Dictionary
spicule
spic ule |ˈspikˌyo͞ol ˈspɪkjul | ▶noun 1 technical a minute sharp-pointed object or structure that is typically present in large numbers, such as a fine particle of ice. • Zoology each of the small needlelike or sharp-pointed structures of calcite or silica that make up the skeleton of a sponge. 2 Astronomy a short-lived, relatively small radial jet of gas in the chromosphere or lower corona of the sun. DERIVATIVES spic u lar |-yələr |adjective, spic u late |-yəlit, -yəˌlāt |adjective, spic u la tion noun ORIGIN late 18th cent.: from modern Latin spicula, spiculum, diminutives of spica ‘ear of grain. ’
Oxford Dictionary
spicule
spicule |ˈspɪkjuːl | ▶noun 1 technical a minute sharp-pointed object or structure that is typically present in large numbers, such as a fine particle of ice. • Zoology each of the small needle-like or sharp-pointed structures of calcite or silica which make up the skeleton of a sponge. 2 Astronomy a short-lived, relatively small radial jet of gas in the chromosphere or lower corona of the sun. DERIVATIVES spicular adjective, spiculate |-lət |adjective, spiculation noun ORIGIN late 18th cent.: from modern Latin spicula, spiculum, diminutives of spica ‘ear of grain ’.
The Wordsmith Dictionary